Apparatus for controlling system state based on unique identifiers
Abstract
An apparatus allows workers to assert and release control over the energization of a system. The apparatus does not require the workers to carry any additional paraphernalia, and is not be easily defeated by other workers. Users asserting and releasing control present tokens uniquely identifying each user to a reader, and the apparatus prevents transition of the system to an undesired state until an appropriate number of users are currently asserting control. For example, a dangerous manufacturing robot can be prevented from energizing until all the users that have asserted control when entering the robot's controlled space have subsequently released control when leaving the robot's controlled space.
- Inventors:
-
- Albuquerque, NM
- Issue Date:
- Research Org.:
- Sandia National Laboratories (SNL), Albuquerque, NM, and Livermore, CA (United States)
- OSTI Identifier:
- 874679
- Patent Number(s):
- 6439458
- Assignee:
- Sandia Corporation (Albuquerque, NM)
- Patent Classifications (CPCs):
-
B - PERFORMING OPERATIONS B25 - HAND TOOLS B25J - MANIPULATORS
F - MECHANICAL ENGINEERING F16 - ENGINEERING ELEMENTS AND UNITS F16P - SAFETY DEVICES IN GENERAL
- DOE Contract Number:
- AC04-94AL85000
- Resource Type:
- Patent
- Country of Publication:
- United States
- Language:
- English
- Subject:
- apparatus; controlling; based; unique; identifiers; allows; workers; assert; release; control; energization; require; carry; additional; paraphernalia; easily; defeated; users; asserting; releasing; tokens; uniquely; identifying; user; reader; prevents; transition; undesired; appropriate; currently; example; dangerous; manufacturing; robot; prevented; energizing; asserted; entering; robots; controlled; space; subsequently; released; leaving; /235/
Citation Formats
Drotning, William D. Apparatus for controlling system state based on unique identifiers. United States: N. p., 2002.
Web.
Drotning, William D. Apparatus for controlling system state based on unique identifiers. United States.
Drotning, William D. Tue .
"Apparatus for controlling system state based on unique identifiers". United States. https://www.osti.gov/servlets/purl/874679.
@article{osti_874679,
title = {Apparatus for controlling system state based on unique identifiers},
author = {Drotning, William D},
abstractNote = {An apparatus allows workers to assert and release control over the energization of a system. The apparatus does not require the workers to carry any additional paraphernalia, and is not be easily defeated by other workers. Users asserting and releasing control present tokens uniquely identifying each user to a reader, and the apparatus prevents transition of the system to an undesired state until an appropriate number of users are currently asserting control. For example, a dangerous manufacturing robot can be prevented from energizing until all the users that have asserted control when entering the robot's controlled space have subsequently released control when leaving the robot's controlled space.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Jan 01 00:00:00 EST 2002},
month = {Tue Jan 01 00:00:00 EST 2002}
}
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